JP2000163920A - Disk cartridge and disk receiving body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk cartridge that prevents dust and the like from infiltrating between the through-part formed in the cartridge case for the purpose of integrally setting up a shutter holding part and the free end of the shutter. SOLUTION: A cartridge case is provided integrally with a shutter holding part 37 near the end of the opening 31; a part of the cartridge case facing opposite the shutter holding part 37 is penetrated through the surface of the case; the free end of the shutter is inserted under the shutter holding part 37 so as to make the free end slidable; and on the side near the free end, a projection 44 is provided such that projects outward beyond the end of the shutter holding part 37, when the opening 31 is at a closed position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge for accommodating a disk-shaped recording medium such as an optical disk or a magnetic disk and a disk accommodating body used for the disk cartridge, and more particularly to a structure of a cartridge case and a shutter thereof.

[0002]

2. Description of the Related Art A cartridge case in which a disk-shaped recording medium is rotatably housed, and an opening in which a head opening and a spindle insertion opening are continuous at a predetermined position is formed, and the opening is opened and closed. Disc cartridges having a shutter slidably supported by a cartridge case and a spring member for elastically biasing the shutter toward the closed position of the opening are generally known.

[0003] As described above, since the opening is a relatively long one in which the head opening and the spindle insertion opening are continuous, the length of the shutter closing the opening is inevitably long. Therefore, the free end side of the shutter rises from the cartridge case, and a gap is formed between the cartridge case and the shutter, and dust may enter from the gap to adversely affect the recording / reproducing characteristics.

In recent years, in order to prevent the free end side of the shutter from rising from the cartridge case, a shutter holding portion formed integrally with the cartridge case is provided near the end of the opening, and the free end of the shutter is held by the shutter holding portion. A structure is slidably inserted under the portion. The reason why the shutter retainer is formed integrally with the cartridge case is to reduce the number of components and to omit the step of attaching the shutter retainer to the cartridge case.

[0005]

The width of the shutter is slightly larger than the width of the opening, and has substantially the same shape as the opening. On the other hand, when the shutter retainer is formed integrally with the cartridge case, a groove-like penetrating portion penetrating to the surface of the cartridge case is formed on the mold at a portion of the cartridge case facing the shutter retainer. This penetrating portion is covered by the shutter pressing portion at a distance corresponding to the insertion margin of the shutter free end. The length of the shutter pressing portion is slightly longer than the width of the shutter in order to ensure the effect of pressing the shutter free end. Therefore, when the opening is closed by the shutter, a gap is formed between the side of the shutter free end and the end of the penetrating portion, and dust enters the inside of the cartridge case from the gap, and the recording / reproducing characteristics are increased. May have a negative effect.

SUMMARY OF THE INVENTION An object of the present invention is to solve such disadvantages of the prior art, and to prevent dust from entering between a penetrating portion formed in a cartridge case and a free end of a shutter in order to provide a shutter holding portion integrally. It is an object of the present invention to provide a disk cartridge and a disk container which do not have a disk.

[0007]

In order to achieve the above-mentioned object, a first means of the present invention is to store a disk-shaped recording medium such as an optical disk or a magnetic disk and the disk-shaped recording medium in a rotatable manner. A cartridge case in which an opening in which a head opening and a spindle insertion opening are continuous at a predetermined position is formed; a shutter slidably supported by the cartridge case so as to open and close the opening; A spring member that elastically urges the cartridge case to the closed position side of the cartridge case. The part penetrates the case surface, and the shutter has a free end slidably inserted below the shutter holding part, On the side near the derived end, it is characterized in that the protrusion is provided protruding outward from the end of the shutter pressing portion when in the closed position of the opening.

According to a second aspect of the present invention, in the first aspect, the projecting portion of the shutter is engaged with the shutter pressing portion when the shutter is at the open position of the opening. Is what you do.

A third means of the present invention is characterized in that, in the first means, a portion for closing the opening of the shutter is constituted by a thin plate made of a synthetic resin such as a shutter plate. It is.

According to a fourth aspect of the present invention, in the first aspect, a portion for closing the opening of the shutter is disposed inside a cartridge case.

According to a fifth aspect of the present invention, in the fourth aspect, a tray insertion port is provided on a side surface of the cartridge case, and a tray for holding a disk-shaped recording medium inserted from the tray insertion port and the cartridge. The shutter is arranged between the cases.

In a sixth aspect of the present invention, a cartridge case having an opening in which a head opening and a spindle insertion opening are continuous at a predetermined position, and a cartridge case slidable to open and close the opening. And a spring member for elastically biasing the shutter toward the closed position side of the opening, wherein the cartridge case has a shutter holding portion integrally with the cartridge case near an end of the opening. The part of the cartridge case facing the shutter holding part penetrates the case surface,
The shutter has a free end slidably inserted below the shutter holding portion, and has a side near the free end, which is closer to the free end than the end of the shutter holding portion when the opening is in the closed position. It is characterized in that a projecting portion projecting outward is provided.

According to a seventh aspect of the present invention, in the sixth aspect, the projecting portion of the shutter is engaged with the shutter pressing portion when the shutter is at the opening position of the opening. Is what you do.

According to an eighth aspect of the present invention, in the sixth aspect, the portion for closing the opening of the shutter is formed of a thin plate made of a synthetic resin such as a shutter plate. It is.

According to a ninth aspect of the present invention, in the sixth aspect, a portion for closing the opening of the shutter is disposed inside the cartridge case.

According to a tenth aspect of the present invention, in the ninth aspect, a tray insertion port is provided on a side surface of the cartridge case, and a tray for holding a disk-shaped recording medium inserted from the tray insertion port and the cartridge. The shutter is arranged between the cases.

[0017]

1 to 3 show a disk cartridge 10 according to an embodiment of the present invention.
Is a plan view, FIG. 2 is a bottom view, and FIG. 3 is a rear view.

Next, an outline of the disk cartridge 10 will be described with reference to FIGS. The disk cartridge 10 includes a cartridge case 11 and a disk-shaped recording medium (hereinafter, abbreviated as “disk”) such as an optical disk or a magnetic disk rotatably housed in the cartridge case 11.
15, a first shutter 40 and a second shutter 50 slidably attached to the cartridge case 11.
, An electronic circuit section 60, and a tray 70 (see FIG. 4).

The cartridge case 11 includes an upper half 20.
By combining the lower half 30 and the lower half 30, a storage space for storing the shutters 40 and 50, the electronic circuit unit 60, the tray 70, and the like is provided therein. Cartridge case 11
The tray insertion opening 16 is provided on one side surface along the insertion direction of the tray. A tray 70 in which the disk 15 is rotatably stored is inserted into the tray insertion opening 16. Upper half 20
A hub retainer 12 is formed substantially at the center of the disk 15 to fix the disk 15 facing a hub (not shown) provided at the center of the disk 15. An opening 31 is formed between a substantially central portion of the lower half 30 and one side along the insertion direction of the cartridge case 11. The opening 31 is one main surface of the cartridge case 11 and is selected to have a shape larger than a head of a disk drive device (not shown). The opening 31 is a head opening (or a head opening) 31a.
And a spindle insertion opening (hereinafter referred to as “spindle opening”) 31b.

Area for forming opening 31 and first shutter 4
A terminal insertion port 32 is formed in a plane area of the cartridge case 11 excluding a plane area where the first shutter 40 is located when the shutter is opened to expose an external connection terminal of the electronic circuit unit 60. Specifically, the terminal insertion port 32
Is formed between the opening 31 and the front end portion in the cartridge insertion direction.

The terminal insertion opening 32 is selected to have a shape small enough to expose the external connection terminals of the electronic circuit section 60, for example, a shape much smaller than the opening 31. Preferably,
The terminal insertion opening 32 and the head opening 31a are aligned in the cartridge insertion direction X so that they are in the same direction as the insertion direction when the cartridge case 11 is inserted into the disk drive.
Are arranged so as to be apart from each other by a certain distance along one side and orthogonal to the one side. These head opening 31 a and terminal insertion opening 32 are opened and closed by corresponding first shutter 40 and second shutter 50. Further, two reference pin insertion holes 33a and 33b are formed at a predetermined interval in the vicinity of the tip of the lower half 30 in the cartridge insertion direction.

The electronic circuit section 60 has an opening 31 of the lower half 30.
And the cartridge insertion direction tip. The electronic circuit section 60 includes a printed board 61 on which an IC chip (not shown) and the like are mounted. On the printed board 61, a contact terminal portion (external connection terminal) 62 is formed so as to be exposed from the terminal insertion port 32 of the lower half 30. The second shutter 50 slides in a gap between the printed board 61 and the lower half 30. The tray 70 includes a handle 74 that projects from the tray insertion slot 16 of the cartridge case 11 when housed in the cartridge case 11. Handle part 7
By pulling the disk 4 out of the cartridge case 11 with a finger, the disk 15 can be replaced or the disk 15 can be mounted alone in a drive device.

4 to 10 are detailed views of the disc cartridge 10, FIG. 4 is an exploded perspective view of the disc cartridge 10, FIG. 5 is a plan view of the tray 70, FIG. 6 is a plan view of the printed board 61, and FIG. FIG. 8 is a plan view of the first shutter 40, FIG. 8 is a rear view of the first shutter 40, FIG. 9 is a plan view of the second shutter 50, and FIG. 10 is a rear view of the second shutter 50.

Next, the details of each part will be described with reference to FIGS. In FIG. 4, a mounting hole 21 is formed substantially at the center of the upper half 20. In the mounting hole 21,
A hub retainer 12 including a clamper 12a and a lid 12b is attached. Two tray lock holes 22 are formed near the tray insertion port 16 of the upper half 20 at a predetermined interval. The tray lock holes 22 are locked by the lock protrusions 71 on the tray 70 side (see FIG. 1), respectively, so that the tray 70 is locked with respect to the cartridge case 11 and the tray 70 is accidentally dropped from the cartridge case 11. To prevent To remove the tray 70,
By pressing the lock projection 71 with a finger, the engagement between the cartridge case 11 and the tray 70 is released, and the tray 7 is released.
You only have to draw 0. Further, the lock projection 71 presses the tray 70 against the lower half 30 by its elasticity, thereby preventing vertical rattling.

A linearly extending ridge 23 (not shown) is provided inside the upper half 20 along the side opposite to the tray insertion opening 16. The ridge 23 is composed of a high ridge 23a having a relatively high height and a low ridge 2 having a relatively low height following the high ridge 23a.
3b. A step is formed between the high ridge 23a and the low ridge 23b.

In the vicinity of the opening 31 and the terminal insertion opening 32 of the lower half 30, the housing recess 34 of the first shutter 40 and the housing recess 35 of the second shutter 50 are provided in the cartridge ejection direction (the direction opposite to the X direction). ).

On the tray insertion opening 16 side of the storage recess 34,
A linearly extending guide groove 36 is formed over the entire width of the storage recess 34. The portion of the guide groove 36 facing the opening 31 penetrates through the lower surface of the lower half 30, and
Other portions are concave grooves with a bottom. The penetrating portion of the guide groove 36 is covered by a shutter pressing portion 37 integrally projecting from the inner surface side of the lower half 30.

A linearly extending projection 38 is provided inside the lower half 30 along the side opposite to the tray insertion opening 16. The ridge 38 is a high ridge 38a having a relatively high height.
And a low ridge 38b whose height is relatively low. A step is formed between the high ridge 38a and the low ridge 38b. Thereby, when the upper half 20 and the lower half 30 are combined, the high ridge 2 on the upper half 20 side is formed.
3a and the high ridge 38a on the lower half 30 side face each other, and the low ridge 23b on the upper half 20 side and the low ridge 3 on the lower half 30 side.
8b are opposed to each other.

Referring to FIG. 5, a circular disk storage recess 72 is formed substantially at the center of the tray 70. A substantially rectangular opening 73 is provided at the center of the disc storage recess 72. At predetermined positions of the tray 70, reference pin insertion holes 75a and 75b are formed. Reference pin insertion hole 7
5a and 75b indicate that the tray 70 is
The lower half 30 has a reference pin insertion hole 33
a and 33b (see FIG. 2). Elastic protrusions 76 are formed at predetermined intervals on one side of the tray 70. The elastic projection 76 elastically contacts the inner surface of the side wall of the cartridge case 11 and prevents the tray 70 from rattling in the left-right direction.

In FIG. 6, a printed circuit board 61 has an I
A C chip 63, a CPU 64, a battery 65 for data backup, and the like are mounted. The printed circuit board 6
1, a predetermined conductive pattern (not shown), a contact terminal portion 62, a mounting hole 66, and the like are formed. Contact terminal 62
Is provided at a position facing the terminal insertion port 32 of the lower half 30. The battery 65 is pushed in from the side surface of the cartridge case 11 while being held by the battery holder 67, and is stored together with the battery holder 67 in a frame 68 provided on the printed circuit board 61.

7 and 8, the first shutter 40 is made of a synthetic resin such as a shutter plate 41 and a slider 42.
Molded as an integral part of The shutter plate 41 has an area that securely covers the opening 31 of the lower half 30 and the opening 73 of the tray 70. On one main surface of the free end of the shutter plate 41 (a side opposite to the side on which the slider 42 is provided), a claw portion 43 is formed so as to protrude over substantially the entire width. In addition, a substantially trapezoidal protrusion 44 is provided on the side near the free end. The slider 42 is formed in an H-shaped cross section, and has grooves 45 on both upper and lower surfaces along the longitudinal side. Further, a pin contact protrusion 46 is provided at one end of the side surface of the slider 42.

Referring to FIGS. 9 and 10, the second shutter 50 is made of an integral body of a shutter plate 51 and a slider 52 and is made of synthetic resin. Shutter plate 51
Has a planar shape that can cover the terminal insertion opening 32 of the lower half 30 reliably. The slider 52 is formed in an h-shaped cross section, and has a groove 5 on one surface along the longitudinal side.
3 is provided. Further, a pin contact protrusion 54 is provided substantially at the center of the side surface of the slider 52 in the longitudinal direction.

When the disc cartridge 10 is assembled, the first shutter 40 has the groove 45 formed with the high ridge 23a of the upper half 20 and the high ridge 38a of the lower half 30.
Is held slidably with respect to the cartridge case 11. Further, the second shutter 5
0 indicates that the groove 53 fits into the low ridge 38b of the lower half 30 and the pin contact protrusion 54 is the low ridge 23b of the upper half 20.
Is slidably held with respect to the cartridge case 11. Therefore, the slider 42 of the first shutter 40 and the slider 52 of the second shutter 50
They are arranged in a straight line on the ridges 23 and 38.

The dimensional relationship in the vicinity of the second shutter 50 will be described in detail. The distance between the front end of the cartridge case 11 in the cartridge insertion direction and the edge of the opening 31 is selected to be at least twice the width of the second shutter 50. The distance between the opening 31 and the terminal insertion port 32 is selected to be equal to or larger than the width of the second shutter 50. When the terminal insertion port 32 is opened, the dimensional relationship is such that the second shutter 50 is disposed between the opening 31 and the terminal insertion port 32.

As shown in FIG. 3, a shutter opening / closing groove 13 is formed in the back surface of the cartridge case 11 in a cut shape from the front end portion in the cartridge insertion direction. The slider 4 of the first shutter 40 is provided in the shutter opening / closing groove 13.
2 and the slider 52 of the second shutter 50 face.

FIGS. 11 to 15 show the first shutter 40.
11 is a diagram for explaining the opening and closing operation of the second shutter 50. FIG. 11 shows a closed state of the first shutter 40 and the second shutter 50, and FIG.
FIG. 13 shows a state immediately before the second shutter moves, FIG. 14 shows a state where the first shutter 40 and the second shutter 50 are in the open position, FIG. 15 shows a state where the first shutter 40 and the second shutter 50 are closed.

Next, referring to FIG. 11 to FIG.
The operation when the shutter 40 and the second shutter 50 are opened will be described. In a state before the disk cartridge 10 is inserted into the drive device (see FIG. 11), the first
Shutter 40 closes the opening 31 and the second shutter 5
0 closes the terminal insertion port 32. The spring 14 is interposed between the first shutter 40 and the side wall of the cartridge case 11. First shutter 40 and second shutter 50
Is biased in the closing direction by the elastic force of the spring 14.
In the closed position, the first shutter 40 and the second shutter 50 are held between the spring 14 and the shutter stopper 39 protruding from the lower half 30 in a state where they are in contact with each other. The free end of the shutter plate 41 has a claw portion 43 (see FIGS. 7 and 8) slidably inserted into the guide groove 36 formed on the lower half 30 side, and is located below the shutter pressing portion 37. The projecting portion 44 is the shutter holding portion 3
7 protrudes from the end.

On the other hand, a relatively short first pin 80 for pushing and opening the first shutter 40 and a relatively long second pin 81 for pushing and opening the second shutter 50 are formed in the drive device. Is done. The first pin 80 and the second pin 81 are
They are formed at predetermined intervals on the same straight line along the cartridge insertion direction X, and project in a direction orthogonal to the cartridge insertion direction X. As shown in FIGS. 11 to 15, the first pin 80 is disposed on the near side as viewed from a cartridge insertion slot (not shown) of the drive device, and the second pin 81
Are arranged more deeply than the first pins 80.

When the disc cartridge 10 is inserted into the drive device, first, the tip of the first pin 80 is inserted into the shutter opening / closing groove 13. Since the first pin 80 is short, it does not come into contact with the slider 52 of the second shutter 50 but passes by its side, and as shown in FIG. 12, it comes into contact with the pin contact projection 46 of the first shutter 40. Touch In FIG. 8, the state where the first pin 80 is in contact with the pin contact protrusion 46 is indicated by a dotted line.

When the disc cartridge 10 is further inserted, the first shutter 40 moves in a direction in which the first pin 80 opens the opening 31. The spring 14 has an opening 31
Is opened and elastically deformed by the first shutter 40. When the opening 31 is opened halfway, the second pin 81 is inserted into the shutter opening / closing groove 13. The second pin 81 is
Since it protrudes longer than the first pin 80, it comes into contact with the slider 52 of the second shutter 50. 9 and 10, the state immediately before the second pin 81 contacts the pin contact protrusion 54 is indicated by a dotted line. Therefore, the second shutter 50 remains at the position in contact with the shutter stopper 39 until the second pin 81 contacts the pin contact protrusion 54.

When the disc cartridge 10 is subsequently inserted, the first pin 80 opens the first shutter 40 and the second pin 81 opens the second shutter 50, as shown in FIG.
open. When the disc cartridge 10 is inserted to a predetermined position, the opening 31 and the terminal insertion port 32 are completely opened as shown in FIG. In this state, the opening 31 exposes the disk 15, and the terminal insertion opening 32 is
Is exposed. When the second shutter 50 is in the open position, one end of the slider 52 abuts on a step formed in the middle of the ridges 23 and 38 so that the second shutter 50 does not move further toward the opening 31. Be composed. Accordingly, in each open position, the second shutter 50 is held between the step and the second pin 81, and the first shutter 4
0 is held between the elastically deformed spring 14 and the first pin 80. The second shutter 50 is disposed at a position where the opening 31 is not closed, that is, between the opening 31 and the terminal insertion port 32.

Since the first shutter 40 is longer than the second shutter 50, there is a concern that the free end of the first shutter 40 will rise. If the free end rises, the tray 70 is caught when the tray 70 is inserted in the direction of the arrow Y (see FIGS. 4 and 11), and the first shutter 40 is deformed. To prevent this,
Regardless of the position where the first shutter 40 is located, a part of the first shutter 40 is always engaged with the shutter pressing portion 37. Specifically, when the first shutter 40 is in the closed position and the half-open position, its free end is located below the shutter pressing portion 37. Also,
Since the protruding portion 44 is also formed at the open position, the first shutter 40 maintains the engagement state with the shutter pressing portion 37.

Further, since the first shutter 40 and the shutter pressing portion 37 are always engaged, when the first shutter 40 returns to the closed position, it operates smoothly without interfering with the shutter pressing portion 37. can do.

When the second shutter 50 opens, the terminal insertion port 3 is opened.
When 2 is exposed, the external terminal on the drive device side is inserted from the terminal insertion port 32. The external terminal comes into contact with the contact terminal portion 62 to transfer data between the drive device and the CPU 64 (see FIG. 6). This data is, for example, game data relating to a game,
5 index data.

When the disk cartridge 10 is ejected from the drive device, as the disk cartridge 10 is pulled out from the open state shown in FIG. 14, the first shutter 40 is pinched between the spring 14 and the first pin 80. In this state, the opening 31 is gradually closed by the restoring force of the spring 14. On the other hand, the second pin 81 moves away from the second shutter 50 as the disk cartridge 10 is pulled out.
The second shutter 50 remains at the opened position in a state of contacting the step formed on the ridges 23 and 38.

When the disk cartridge 10 is further pulled out, the end of the slider 42 comes into contact with the end of the slider 52 as shown in FIG. When the disk cartridge 10 is subsequently pulled out, the second shutter 50 is pushed back together with the first shutter 40 by the restoring force of the spring 14.

The second shutter 50 is the first shutter 4
The shutter is completely closed at the same time as 0, and is held in a closed state together with the first shutter 40 between the spring 14 and the shutter stopper 39. When the disk cartridge 10 is further pulled out, the first pin 80 passes by the slider 52 and returns to the state shown in FIG. Thus, the disc cartridge 10
The first shutter 40 covers the opening 31 and the second shutter 50 covers the terminal insertion port 32 in conjunction with the operation of pulling out the terminal insertion port.

[0048]

According to the first and sixth aspects of the present invention, a projection is provided on a side portion near a free end of a shutter, and when the opening is closed by a shutter, the projection is an end of a shutter holding portion. That is, it protrudes outward beyond the end of the penetrating portion and covers the surface of the cartridge case. Therefore, intrusion of dust from the through portion is effectively prevented, and a highly reliable disk cartridge and disk housing can be provided.

According to the second and seventh aspects of the present invention, the projecting portion of the shutter is engaged with the shutter pressing portion when the shutter is at the opening position of the opening. Therefore, when the shutter returns to the closing position, the shutter does not interfere with the shutter pressing portion, and the returning operation of the shutter is smooth.

According to the third and eighth aspects of the present invention, the portion that closes the opening is made of a synthetic resin thin plate. Since a thin plate made of a synthetic resin is liable to be deformed such as warpage, the function of the shutter pressing portion is particularly effectively exhibited.

According to the fourth and ninth aspects of the invention, the portion for closing the opening of the shutter is arranged inside the cartridge case. With this structure, if the free end of the shutter rises from the inner surface of the cartridge case, it may come into contact with the surface of the disk-shaped recording medium contained therein and damage the recording surface. You.

According to the fifth and tenth aspects of the present invention, a tray insertion port is provided on a side surface of the cartridge case, and a shutter is arranged between the cartridge case and a disc-shaped recording medium holding tray inserted from the tray insertion port. The structure is With this structure, if the free end of the shutter rises from the inner surface of the cartridge case, it may hinder the tray from being inserted into the cartridge case or the shutter may be deformed. It has features such as

[Brief description of the drawings]

FIG. 1 is a plan view of a disk cartridge according to an embodiment of the present invention.

FIG. 2 is a bottom view of the disk cartridge.

FIG. 3 is a rear view of the disk cartridge.

FIG. 4 is an exploded perspective view of the disk cartridge.

FIG. 5 is a plan view of a tray used for the disk cartridge.

FIG. 6 is a plan view of an electronic circuit unit used in the disk cartridge.

FIG. 7 is a plan view of a first shutter used in the disk cartridge.

FIG. 8 is a rear view of the first shutter.

FIG. 9 is a plan view of a second shutter used in the disk cartridge.

FIG. 10 is a rear view of the second shutter.

FIG. 11 is a diagram illustrating a state in which a first shutter and a second shutter are at closed positions.

FIG. 12 is a diagram illustrating a state immediately before a first shutter moves.

FIG. 13 is a diagram illustrating a state immediately before a second shutter moves.

FIG. 14 is a diagram illustrating a state in which a first shutter and a second shutter are at an open position.

FIG. 15 is a diagram illustrating a state in which the first shutter and the second shutter are being closed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Disc cartridge 11 Cartridge case 14 Spring 15 Disc 20 Upper half 30 Lower half 31 Opening 37 Shutter holding part 40 First shutter 41 Shutter plate 42 Slider 43 Claw part 44 Projection part 70 Tray

Continued on the front page (72) Inventor Makoto Miura 1-1-88 Ushitora, Ibaraki-shi, Osaka Hitachi Maxell Co., Ltd. (72) Tamotsu Iida 1-188 Ushitora, Ibaraki-shi, Osaka Hitachi Maxell shares Within the Company (72) Inventor Kintane 1-88 Ushitora, Ibaraki City, Osaka Prefecture Inside Hitachi Maxell Co., Ltd. (72) Yoshitake Kato 1-188 Ushitora, Ibaraki City, Osaka Prefecture Hitachi Maxell Shares In-company (72) Inventor Masanori Agematsu 60 N.Fukuinami-Takamatsucho, Higashiyama-ku, Kyoto-shi, Kyoto Nintendo Co., Ltd. Inventor Junji Takamoto Nintendo Co., Ltd., 60, Fukuinamikamimatsucho, Higashiyama-ku, Kyoto, Kyoto, Japan (72) Inventor Masahiko Ota 60, Nishimatsu, Fukuinakami, Matsuyama, Higashiyama-ku, Kyoto, Japan

Claims (10)

[Claims] 1. A cartridge case in which a disk-shaped recording medium is rotatably housed, and an opening in which a head opening and a spindle insertion opening are continuous at a predetermined position is formed; A shutter slidably supported by the cartridge case so as to open and close the portion, and a spring member for elastically biasing the shutter toward the closed position side of the opening, wherein the cartridge case has an end portion of the opening. A shutter holding portion is provided integrally with the cartridge case in the vicinity, a portion of the cartridge case facing the shutter holding portion penetrates the case surface, and the shutter has a free end below the shutter holding portion. It is slidably inserted and projects to the side near the free end beyond the end of the shutter retainer when in the closed position of the opening. Disc cartridge, wherein a projecting portion is provided. 2. The disk cartridge according to claim 1, wherein the projecting portion of the shutter is engaged with the shutter pressing portion when the shutter is at the opening position of the opening. 3. The disk cartridge according to claim 1, wherein a portion for closing the opening of the shutter is formed of a thin plate made of synthetic resin. 4. The disk cartridge according to claim 1, wherein a portion for closing the opening of the shutter is disposed inside a cartridge case. 5. The disk cartridge according to claim 4, wherein a tray insertion port is provided on a side surface of the cartridge case, and the tray is provided between the disk-shaped recording medium holding tray inserted from the tray insertion port and the cartridge case. A disk cartridge, wherein a shutter is disposed. 6. A cartridge case having an opening at a predetermined position where a head opening and a spindle insertion opening are continuous, a shutter slidably supported by the cartridge case so as to open and close the opening, A spring member for elastically urging the shutter toward the closed position side of the opening, wherein the cartridge case is provided with a shutter holding portion integrally with the cartridge case near an end of the opening, and the shutter holding portion and A part of the cartridge case that is opposed to the case penetrates the surface of the case. The shutter has a free end slidably inserted below the shutter holding part. A disc storage body provided with a protruding portion that protrudes outward from an end of a shutter holding portion when the shutter is in a closed position. 7. The disk container according to claim 6, wherein the projecting portion of the shutter is engaged with the shutter pressing portion when the shutter is at the open position of the opening. . 8. The disk container according to claim 6, wherein a portion for closing the opening of the shutter is made of a thin plate made of synthetic resin. 9. The disk container according to claim 6, wherein a portion for closing an opening of the shutter is disposed inside a cartridge case. 10. The disc container according to claim 6, wherein a tray insertion port is provided on a side surface of the cartridge case, and a disc-shaped recording medium holding tray inserted from the tray insertion port and the cartridge case. A disk container, wherein the shutter is disposed.